Vehicle-brake.



(no Modal.

Patented Dec. 3|, I901. J. MBKEEN.

VEHICLE BRAKE,

(Application filed. Oct. 22, 1901.)

. '"i'ii?llllllllllllllllllllll llrTTTnn STATES ATnT FFICE.

JOHN MCKEEN, OF ARMSTRONGS MILLS, OHIO.

VEHICLE-BRAKE.

SPECIFICATION forming part of Letters Fatent N 0. 689,902, datedDecember 31, 1901 Application filed October 22,1901. Serial No. 79,593.(No model.)

1'0 (l/ZZ whom, it may concern:

Beitknown that I, JOHNMOKEEN, a citizen of the United States, residingat Armstrongs Mills, in the county of Belmont and State of Ohio, haveinvented certain new and useful Improvements in Vehicle-l3rakes; and Ido declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

This invention relates to new and useful improvements in vehicle-brakes;and it consists in the provision of means whereby the parts are soconstructed and arranged that rattling of the brake will be prevented,the shoes being self-adjusting and adapted to be i positioned to fitvehicles of different widths.

More specifically, the invention resides in the provision of a brakehaving shafts, with thread-bearings with hangers, means being providedto take up wear.

The invention will be hereinafter more fully described, and thenspecifically defined in the appended claim and illustrated in theaccompanying drawings, which, with the letters of reference markedthereon, form a part of this application, and in which drawings- Figure1 is a bottom plan view of a truckframe to which my improved brake isattached. Fig. 2 is a central longitudinal sectional view through theshaft carrying the brake-shoes. Fig. 3 is a cross-sectional view throughone of the shoes and shaft carrying same, and Fig. 4 is a centrallongitudinal sectional view through the shaft to which the foot-lever isattached.

Reference now being had to the details of the drawings by letter, Adesignates the frame of the truck, to which the brake mechanism isattached. On the under side of said frame are secured the hangers B andB, the bearing-apertures in which are threaded to receive the threadedends of the shaft 0. Projecting from the shaft is an arm D, forming afoot-lever, which projects above the truck, while another arm E projectsfrom the shaft in the opposite direction and is apertured at its end toreceive a bolt f, which is held in the ends of the arms of thebifurcated rod F. At the other end of the truck from that to which thehangers B and B are attached are the hangers H and H, the apertures inwhich are interiorly threaded a portion of their length to receive anadjusting set-screw G, on the outer threaded circumference of which ismounted a jam-nut G. The walls of the apertures in the hangers H and Hare conical-shaped near the inner ends of-the apertures, adapted toconform to the conical ends M of the shaft M. Interposed between theinner end of said set-screw and one end M of the shaft is a packing P,preferably of leather, and by turning the set-screw said packing may beforced against the end of the shaft M to take up any wear. Right-angledarms Q project from the shaft M near its pivotal portions, and each armnear its end has a threaded portion J, and a recess J is outlongitudinally into said threads to receive the end of a set-screw R,which is mounted in a threaded aperture in the frame of the shoe. Saidshoe-frame has a second threaded aperture at right angles to theaperture carrying the set-screw and adapted to fit over the threads J.When the set-screw is adjusted in place in the shoe-frame, the shoe andframe will have a slight rotary movement 011 the arm Q, limited by theend of the set-screw contacting with the opposite edges of the recess J.This slight movement of the shoe allows the latter to adjust itself tothe tire of the wheel when forced against same. Projecting from theshaft M is an arm T, the end of which is apertured to receive a bolt 0,mounted in the ends of the rod F.

From the foregoing, when taken in connection with the drawings, it willbe observed that as the bearing portions are threaded'at one end of thetruck, also the shoes at their connections with the shaft carrying same,rattling of the parts will be effectually prevented, wear may be takenup on the shoe carrying shaft, and the shoes may be adjusted to fitnarrow or wide wagons, and having a slight play will conform to thecircumference of a wheel when forced against same.

Having thus described my invention, what I claim to be new, and desireto secure by Let ters Patent, is

in a recess in the threaded portion of the shaft, the counter-shaft 0having screwthreaded bearings and pivotal link connec tion with saidshaft M, as set forth.

In testimony whereof I hereunto affix my signature in presence of twoWitnesses.

. JOHN MCKEEN.

Witnesses:

A. J. LINDSEY, E. L. HEss.

